EN 1.7725 Steel vs. R05240 Alloy
EN 1.7725 steel belongs to the iron alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is R05240 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 150 |
| Elongation at Break, % | 14 | |
| 25 |
| Poisson's Ratio | 0.29 | |
| 0.36 |
| Shear Modulus, GPa | 73 | |
| 57 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 270 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 210 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 190 |
| Thermal Expansion, µm/m-K | 13 | |
| 6.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 14 |
| Embodied Water, L/kg | 54 | |
| 460 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 59 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 90 |
| Stiffness to Weight: Axial, points | 13 | |
| 6.3 |
| Stiffness to Weight: Bending, points | 24 | |
| 13 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 5.4 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 6.8 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0 to 0.010 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 | |
| 35 to 42 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.020 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 57.9 to 65 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 0 to 0.050 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 |